It's a sensing system for patients that would lit an LED when there is 1. At present it's built as a compact system as an experiment. I would like to separate the indicator part from the main circuit so that the indicator can be placed somewhere else, for example nurse stations. I've asked for 5-6 meters just to test the system. I won't mind if it covers more distance.
If you go wireless, you better make sure that you don't interfere with any other machines! It sounds like this is a medical device, and I think that they are extremely sensitive about RF emissions.
